[mythtv-users] Nagging audio sync issue

Nick Morrott knowledgejunkie at gmail.com
Wed Apr 18 18:12:10 UTC 2007

On 17/04/07, Chris Funk <cfunk30myth at gmail.com> wrote:
> My master backend has a pvr-500 in it.  1st input is direct from the coax.
> 2nd input/tuner is from svideo via a dct-6200.  Watching from the backend
> everything is fine (both tuners).
>  Frontend #1: AMD64 3500+  onboard nvidia audio(analog) going to 5.1
> receiver. Conneted using dvi to zenith plasma.  The 1st tuner everything is
> fine. However, when I switch to the 2nd tuner the audio is about +150ms  off
>  (this occurs on all channels).

I'm wondering whether the delay is due to the fact tuner #2 is mixing
separate audio and video on the fly from your cable box and the delay
is introduced here, whereas the tuner and ATSC card are receiving
multiplexes signals. If you temporarily make tuner #2 another tuner
(i.e. put the coax feed on tuner #2 input, do you still see the audio
lag on tuner #2?

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